What lights should i use for autos? Which parameters of lights plants need?

Not really going to grow anything good without a decent light especially in flowering and the electric cost is alot mine with heating and 1 600w led pulls only 125w and there costing me £4 a day even if that was the cost all though which it won't be vos need better lights for flowering so electricity cost will be more really and in 20 weeks the cost of just electricity is £560 its an expensive hobby but I love it

Mein Freund wenn du nicht genug Geld hast könntest du dir selber aus E27 LED was bauen ! Damit kannst du Recht günstig was halbwegs gutes bauen ! Das wird die günstigste und für deinen Fall vermutlich die beste Lösung sein ! Viel Glück !

Regular CFL’s and LED light bulbs will get you through veg stage , but you will need a decent light for flower if you want some dense buds. Most led and cfl bulbs can get close to plants they don’t put off much heat , YouTube has plenty videos on plant distance. Distance varies on strength of light. Good luck

the single most important factor in an indoor grow is your lights. Buy the best you can afford. and if you cant afford anything good ATM. Wait and save up or grow outdoors. Grow specific lights are designed for higher output and spectrum. basic indoor lights produce light yes, but not on the same level. output meaning more watts = more lumens or light particles, not all grow lights say the true wattage, they lie read into them. spectrum meaning the band of colours it produces ranging from 400–700 nanometers of visible light and light outside the visible spectrum. ultaviloet 400 and below plus infrared 700 and above. You can absolutely use basic desk lamps and such with very limited success, like 1-8g a plant maybe. cheapest options would be the sun outdoors or high output full spectrum CFL's, but the cost of running them must also be a factor not just the initial setup cost. 50$ CFL is not bad considering some lights cost upwards of 800$+ minimum wattage to be around 100w-500w, multiple lights combined with close to 1000 lumens per bulb/strip, the kelvin temperature should be 4000-6000k, you can mix and match for fun if you want. This will be a shotgun setup and should only be used temporary. CFL's and LEDS have different power requirements and properties. eg LED is more efficient then CFL's, so a 20w led will makes more lumens then a 20w CFL generally. but thats only one part, got to think of spectrum as well. Do not use incandescent or halogen, they use the most watts and mainly produce in the infrared range aka heat. HPS and MH also generate a lot of heat and need special hoods and vents, if money is an issue stay away from them as well. Overall if you want to do it right, you need the correct light. Best of luck